Motor.



No. 675,860. Patented lune 4, |90l. A. LEVEDAHL.

IUTDR.

(Application Med Hay 3, 1900.)

3 Shaea-Shoet I.

(no new.)

No. 675,860. Patented lune 4, |90I.

v A. LEVEDAHL. y

HUTOR.

(Applicltion lod lay 3, 1900.)

(No Mode.)

3 Sheets-Sheet 2.

QU i l 30V Y UNLV- No. 675,860. Patented lune 4, I90I.

A. LEVEDAHL. i

HDTOR.

(Application flled May 3, 1900.)

3 Sheets-Sheet 3.

w man lll HIHIIHIIIHH IIIIIHIIIlllIlI i f W i; F :l L A [hij Y G i A j iI j? 9 rrrrr am UNITED STATES PATENT OFFICE.

AXEL LEVEDAIIL, OF CHICA-GO, ILLINOIS, ASSIGNOR TO THE AURORA AUTOMATICMACHINERY COMPANY, OF AURORA, ILLINOIS.

lMOTOR.

SPECIFICATION formingpart of wLetters Patent` No. 675,860, elated June4, 1901.

Application tiled May 3,1900. Serial No. v15,326. (No model.)

lie it known that I, AXEL LEVEDAIIL, of Chicago, in the county of Cookand State of Illinois, have invented certain newand useful Improvementsin Motors; and I do hereby declarc that the following is a full, clear,and exactdescription thereof, reference being had to the accompanyingdrawings, and tothe letters of reference marked thereon, which form apart of this specification.

This invention relates to improvements in valve-actuating mechanismfor-.motors or engines of that class operated by an elastic fluid underpressure. The invention consists in the matters hereinafter described,and more fully pointed out in the appended claims.

My invention is herein shown with a portable pneumatic motor employedfor actuating a drill or like purpose and in which motion is given t-o arotative shaft by means of a plurality of cylinders containingreciprocating pistons and in which slide-valves are employed to controlthe admission of the iluid to the cylinders. y

The invention will be more readily understood by referencetotheaccompanyingdrawings, wherein- Figure l is a view in side elevationof a' portable motor embodying my invention. Fig. 2

is a detail sectional view thereof taken axi.

ally through two of the power-cylinders of the motor and through theslide-valve, by which the admission of steam to said cylinders iscontrolled. Fig. 3 is a detail section, considerably enlarged, takenthrough the crank-shaft of the engine and illustrating the devices bywhich the slide-valve is actuated. Fig. 4- is a detail sectional vicwtaken on line 4 4 of Fig. 3. Fig. 5 is a section similar to Fig. 3,illustrating a changed position of the parts. Fig. (I is a detailsectiontaken online o t; of Fig. 5. Figs. 7 and S are detail views of theeccentric shown in Figs. 3 to (5, taken on lines 7 7 and 8 S,respectively, ofsaid Fig. :3. Fig. 9 is an exterior view of a part ofthe casing of the engine with parts broken away to show the interiorconstruction, illustrating in modified form the devices by which theeccentric is operated. Fig. 9 is a detail section taken on line Sla 9 ofFig. t'. Fig. 10 is a view of the crankshaft with eccentric thereon,illustrating a modified construction in devices for actuating the saideccentric. Fig. l1 is a detail section of the crankshaft shown in Fig.10,taken through the eccentrics there on, showing devices for operatingsaid eccelr trics. Fig. 12 is a detail section taken on liuc 12 12 ofFig. l1.

The motor illustrated is generally similar in itsmain features to themotor illustrated in Patent No. (330,357, granted to ll. J. Kimu manAugust 8, 189i).

As shown in the said drawings, A indicates the main casing of the motor,which is of sector shape and provided at one end with a head A and atits opposite end with a head A?. The motor is provided with fourcylinders, which are cast integral with the casing and two ot" which areshown in the drawings and marked Il and ISC baid cylinders are arrangedin two pairs, with the cylinders of each pair parallel with eachotheraud at right angles to the cylinders of the other pair. C in dica'tes acrank-shaft which is provided'with two cranks. The cylinders containpistons D D, which are connected with the crankshaft by means of pitmen(l d. The pitmen belonging to two of the cylinders are connected withthe crank-pinvof one ofthe cranks, and the pitmen of the other twocylinders are connected with the crank-pin of the other crank. The headA/ of the casing is provided with two integral valve-castings, which areinteriorly of cylindric form and are arranged with their central axisparallel with those of the pairs of cylinders with which they areassociated. Oneofthesevalvc-casingsisshown in the drawings and is markedl. The val vecasing E contains a piston-valve F, adapted to slide endwise in the valve-casing and which, through suitable ports or passagesin the valve #casing andv motorcasing, affords a proper supply ot steamto and permits the eX- haust of steam from the cylinders I3 l. Thedetails of construction with regard to these parts are not illust-rated,the same havingno bearing on the present invention.

Mounted on the crank-shaft C, at its end adjacent to the piston-valve,is an eccentric G, through which the said valves are given endwisereciprocatory motion. Eccentric-rods II II are employed te transmitmotion from said eccentric to the two piston-valves, said eccentric-rodbeing pivoted to the valves and provided with eccentric-straps .71, h',which are arranged side by side upon the eccentric G.

Aindicates a shaft which is driven from the crank-shaft C and which isadapted to receive a drill l' or other rotative tool.

J indicates a tube which is attached to one side of the casing A, and Kindicates a rod yattached to the casing A opposite and in alineinentwith the tube J. The tube J and the rod K constitute handles by whichthe motor may be held and manipulated when in use. A flexiblesiipply-pipe is connected with thc tube J, whereby the compressed fluidis snpplied to the motor. I.- indicates a t'hird handle, which isattached to. the head A and which may ne used in connection with thetube J or rod K in manipulating the tool which is driven by the motor.

So far as described the motor illustrated is like similar motorsheretofore used.

Now referring to the novel features constitutng my invention, these areconstructed generally as follows: The eccentric G instead of beingrigidly secured to the crankshaft is pivotally connected therewith, sothat it may be shifted thereon in a plane perpendicular' to the centralaxis of the crank-shaft and is so arranged that when shifted from onelimit to the other of its movement its greatest cccentricity will bethrown from one side tothe other of the shaft with the effect ofreversing the direction of the motion ci the engine, and 'F t 'accd inits central position it-will be concutric with the shaft, will give nomotion to Ahe slide-valve, and will entirely cut off the supply ot'conepressed fluid to the cylinders. In connection with the shiftingeccentric thus arranged I provide an operative connection between saidcccentrics and one of the handes of the motor, by which the saideccentric may be moved or shifted to reverse the motor or stop the sameby movement ot' one' et the hands o? the operator while still graspingthe handle to which the operatingr device entends.

Now referring to the details of construction in the shifting eccentricand actuating devices therefor ilhistratcd in Figs. l to 8, these parteare constructed as follows: The

ecc f mounted on a pivot-pin G, wh fed parallel with the cranksha dsuitably supported at its ends on said crank-sluit` VIn the particularconstruction illustrated, 4Tige. 3 and 4, the said pivotpin G is engagedat one end with an adjacent crank-arm c' of the crank-shaft and at itsopposite end, or`Y that adjacent to the head A', with a flange on asleeve M, which sleeve surrounds and is attached at the outer part ofthe crankshaft, As herein shown, this end ot the crank-shaft is providedwith a collar lll', which surrounds the sleeve M and engages abearing-ring A3, secured hyscrewthreads in an opening of the head A'.Said collar M' provided w`th a flange m', which bears against the ringA3 to hold the shaft from endwise movement. The eccentric G is providedwith a segmental slot or opening` through which the crank-shaft passesand which is arranged, concentrically with the pivot-pin G', so to admitfrceanoveuteiz et the eccentric on the said pivot-pin` to an cx tentrequired for reversing the engirn' thc motion 0f the eccentric beinglimited hy contact with the shaft at either limitof its throw. Toprovide means for actuating or movin g the shifting eccentric from theexterior of the motor-casing, I provide, as shown in l to 8, devices asfollows: The end ot' the crankshaft on which the said eccentric asmounted is made hollow or tubular, and in the saine is mounted anendwise-sliding ao tuating-rod N, which projects outwardly from the endof the saidI crank-shaft. The said actuating-rod is provided at itsinner end with a swiveled head N', which is free to rotate while theactuatingrod Nels held .Frein rotation, but which at the same time isren-- gaged with said rod N, so as to be mow nl wise therewith. Thesw'vel connectent tween the head N and the rod N, rf; he shown, consistsof a stein n on the h. which enters a sockctin the rofl and is providnear its inner end with an attaclni a I n', herein shown as securedthereto by nn of a pin n2. in the actuatingrod N is a ring nl, whinserted inthe socket and secured therein 2 any suitable means and theinner which forms a' shoulder adapted to vbe., against the adjacent endof the sleeve n', iinf@ thereby hold the stein from outra/:rrd ment, thestein being held from inw"x df ment by contact of its inner end w iabearing-surface at the inner end of the 'streitet In the said head N' issecured a radallywni ranged stud M2, which projects outwardly' through alongitudinal slot formed, in the 1 tubular crank-shaftarnd pro, oeyordan oblique or cam slot g, torino surface of the eccentric G, f' 7. Byreason of the engagement N2 with the slot c' of the cranh'sh will alwaysturn or rotate with shaft. The stud N2 is arranged respect to thepivotalaxis of the centric, and the cainfslot g is loca inner face ofthe segmental opening n eccentric, so that the outer end of ih stud willreinain constantly in posi engagement with said cam-slot 5;. it ,f

actuating-rod N is moved longitrn stud N2 will be carried along ortime.: slot c'in a direction endwise of the i by engagement with theoblique or c .m g will swing or oscillate the eccentric in c directionor the other, according to the d?. tion in which the actuating-rod ismover; Figs. 3 and4 show the actnatinguml at the in engine.

The ietwat t iiliiiiiijz ier and nim eil "oinyliah the f1 "i constitutetin; www ,ntwardlj i el' the ileoentrie.

A i uetratr-d, how andlieihyiiet i the teni @Rari-i menne For a f eitherhand iff the operator from thehai of the machine. lior this por shown inifi Y, l to 8 devireeiw miroir. handle Il, win i is mounted en theFir-:f4 0f the 1notor,ii-; pivotally oennrifimi with by means of apivoestud L', al rotative movement of the handle and passes through andengages a oylinflre or tnbnlarsleei'o Il?, forming part el the im Insaid sleeve ie formed an oblique or inclined groove i, in which reste aring: i), ha"- ingr attac-,hed to it an arm O', which is rigid to andengages the actuating-rod N. A5 herein shown, the outer end of said rodN is provided with a transverse slot nl, and the arm O is provided atits end with a head o, which enters and engages the imposite Walls ofthe slot. Obviously the arm O' is held from sidewise movement byengagement at its outer end with the actuating-rod N, so that when thehandle L is rotated the ring() will be held from turning, so that by theshifting of the position of the inclined groove!l the outer ond ol' thearm O will he moved to-y ward or from the easing, and the actuatingrod Nthereby operated.

In the use of the motor thns consti-noted the motor will he supported bythe operator grasping withone hand either the tubo .I or handle K andwith the other hand the handle L. By turning or rotating said handle Lhe maystop, start, or reverse the motion or change the speed of theengine as desired.

In Figs. i) and 9' I have shown a construetion by which theactuating-rod N for the eeA centric may be operated from one of thelateral handles J or K of the motor. As shown in said Figs. 9 and il, alever l is pivot-ed to the engine-easing by means of ft lug p thereon orotherwise. One arm Pof said lever extends to and engages theaotuating-rod fil " i ia riuniti in sue/h man ner as togivo endwisemovement to the red when the lever is operated. The other arm l"2 ol'the lever P is at right angles to the arm P' and entends to the tube.iata point near the motorrasing. On said tube .i mounted a. rotativesleeve Q, which provided at, its opposite with Garnele?Q i; q. Theattirent extremity of the leverarm IJ is forli .l and the arms of thefori; are provided with in.vardlyextending stede up" ji', adapted toengage the eauuslot i7, The

.alot-.ve (j is made ei' auch iengzth that it 'may he grasped hy thehand ot the operator and is preforahly ovideil with a rough snrfaoe, afihown. `iivionely a partial rotation o? the Sleeve Q in either directionwill, through the medi z or" the cani-Slot l! and luv; give mmeinent othe aetnatingwod N inimrt'ilj, or niv-virili; with a result oi? ahiiling; the ij-i'eentrie in the manner ybefore dese ri hed.

. in, r1, 'ice for hitting t inie'ivhat from. ioni; iiegizrer:

and li I have Shown a de- `.he eccentric whit-h dii' i ilinatrated in tlif l inwind onlinr l nifl of the hive-#pi n s? of an eeeent-rie 1. S'indicate tivo trie-straps which Surround the Said in one Side-oftheerfnil;` allait it is. ioifnied a longitudinali groeve r", in, whichis platre-fi an enilwiseslidinn rod ii', -which extends; within theshifting eneentrit: nud is provii'led with a radial stud r2, adapted toengage :t ennrnroiive a", ii lie the L'mngroove g hereinheiorrdescribed. 'Vlie outer end o' the siding rod il" i ftred 1.o a groovedcolY lar R, Whieh is engaged by the forked end of a. shifting leva r R,It will he 1obvious that hy movement et' the lever I?? and ef the eollarR2 the eccentric may he operated in the same manner and with the nameresulte as hereinbefore stated.

I claim aa my invention- 1. A compressed-fluid motor provided with aclosed easing and comprising a cylinder, a piston, a slide-valve, arotative shaft actuated by the piston, an eccentric mounted on the shaftoperating said slide-valve, said eccentric. being movably connected withthe shaft in sneh manner that when at the central part of its movementit will be concentric with the Shaft, and means for operating saideoeentrie contained within said shaft extendA ing longitudinally throughsaid Shaft to without Said casing.

2. A portable motor provided with a handle or handles, said motorComprising a Cylinder, a piston, a Slide-valve, a rotative shaftaetnated by said piston and provided with a shifting eccentric foroperating said slide-valve, and means for operating;l said shiftingeeeentrio extendingI from the Same Ato the handle on the motor, wherebythe said eccentric may he operated hy the same hand which graspa saidhandle.

8. A portaiide motor Conipiining a (basing having n inofnhle handle, n.ejy'linder, .1i ,ois i Lon7 o. slide-valve, a shifting; eroentrio foroperating anni valve, :nifl inemn :or operating seid eccentric extendinglo sind operated by said movable handle.

fl. A poiylz'tlilo motor comprising a eloseil e. ng, n *oylinileig :tpiston, n slide-valve, n rotative shaft actuated h v the piston nml providi-.fl ,vih rm e-feentrio for actuating the volvo, loc-ated in theeasing o. handle inovahly mounted on said Casino", and means for opernming said shifting; ecoentrie, extenning from Sold eccentric through theeasing; :ind oonneete with the said movable handle.

5. The'oombination wiih n rotative Shaft, of nn eccentric pivoted on theshaft 'oy means os". pivot-pin arranged pa rnllel. with the shaft-:ixis, 'mid eccentric being provided. with an opening; of segmental formconcentric with the Sninl pivot-pin through whioh the shhft passes,inerme for actuating ,eaifl eooontrio comprising Stud arrzingeilrnlinllv with respeot lo mid pivot-pin nml secured at its inner enfl ioa. rod within Seial main Shaft hav img* longitnriinnl inovenniintti'ierein, and n @zuil-groove in the face of he Seginental open-I ingrin the eoeentrie :ulnplefl for engegeinen with ihe outer end of Airlradial sind. l. The combination with a rotative Shaft; of :m Q-,eeniriothereon, will eeifentrio heing razioni-@led wiih the slit-ift hy apivot-pin .firrenngeil parallel with the shaft-axis, and being providedwith an opening of segmental form for rho passage ol' che shaft, of anendiviseeiilinrf, actuating-rod inonnteil @oneentrieally within seidshalt, and provided with :i sind projecting radially through :in openingin said shaft, a oanrgroovo in the inner fir-ee of the eccentric openingadapted to be engaged by Said sind, and o non-rotative part hnvi ng eno.wise movement with, respect to the Shaft and Connected with soldactuating-rod, whereby longitudinal movement maybe gi von to the hitter,

arnese eooentric pivoted tothe shaft so as to be shifted thereon, andprovided with an aperture lhrongh which the shaftpasses, nnendwisemovable notuaiingmod contained Within the' Shaft, said rod havinga non-rotntive head Swivele'fl thereto, :i stud in snif: head passingradially through the .longitudinal slof;- in the shaft, the face of Seidoooentrie opening being; provided with n @im Igroove to receive the saidstud.

S. A. pormhle motor comprising; n closedV casing, a handle plv tellymounted thereon, zieylinder, a piston, n rotative Shaft actuated byeaidpiston@ehiftingeoeentrieontheeheft, an endWise-movnhle rod extendingonneie of tho easing having operative oonneoion with the eeeentric, sindn lever connecting said rod wit nthe handle, said handle being providedWit a groove arranged ohlionei to ite axis oi' rotazion, and the leverhovii'ig n rigidly- :ittnohed ring which engages sold groove.

9. A. portable motor comprising :L closed easing, :t cylinder, a piston,:L slidewalve, n rotative shaft actuated by said piston, a shiftin"eccentric on the shaft irovidecl with an AXEL LEVEDAUL. iimessesz (uns,E. EniKSoN, Jonin L BERKEL.

.i The Combination with a rotativothollow, 45 f longtndinally-slotteflshaft', of a piston, an

